He married his wife Winnie Chin in 1995, who was 1st runner's up in the 1981 Miss Hong Kong Pageant.

They sued Emdia Ltd, who operated the jeweler Siba Co. for compensation and was awarded HK$3.21 million on 3 August 2005.

[5] The team tried again in 2009, Philip this time partnering Christian Jones and Marchy Lee, the trio completed 191 laps and failed to finish again.

[6] Team Hong Kong Racing entered the 2009 1000 km of Okayama, with Philip Ma partnering Jeffrey Lee and Tomáš Enge.

[8] In November 2011, Philip Ma joined AF Corse and partnered Marco Cioci to compete in the 2011 6 Hours of Zhuhai, the final race of the 2011 Intercontinental Le Mans Cup season.